C1111133313331323223313331333133313112331322121111331323133323121   >>    C111113331333132322331333133313331311233132212111133132313332312   <<    C1111133313331323223313331333133313112331322121111331323133323123   >>      C1111133313331323223313331333133313112331322121111331323133323122   >>